Valeriana dioica
woodland valerian
WTU specimens
Other herbaria

Distribution: British Columbia to Nova Scotia in Canada, south to northwest Washington, central Idaho and northwest Wyoming.

Habitat: Moist places in the mountains, often in wet meadows.

Flowers: May - July

Origin: Native

Conservation Status: Not of concern

Description:
General:

Fibrous-rooted perennial from a stout, branched rhizome, the unbranched stem glabrous, 1-4 dm. tall; some plants have perfect flowers, others have only pistillate flowers.

Leaves:

Basal leaves well-developed, petiolate, the blade up to 8 cm. long and 3 cm. wide, mostly undivided; cauline leaves opposite, 2-4 pairs, sub-sessile, pinnatifid, the terminal lobe ovate-oblong or narrower, up to 5 cm. long and 2.5 cm. wide, the 1-7 pairs of lateral lobes smaller, under 1 cm. wide.

Flowers:

Inflorescence compact, 1.5-3 cm. wide, elongating in fruit; calyx enlarging and spreading, with 9-15 plumose, bristle-like segments; corolla united, white, 2-4 mm. long, the 5 lobes about equal to the tube; stamens 3, well exerted; ovary inferior, with two of the three cells vestigial.

Fruits:

Inflorescence compact, 1.5-3 cm. wide, elongating in fruit; calyx enlarging and spreading, with 9-15 plumose, bristle-like segments; corolla united, white, 2-4 mm. long, the 5 lobes about equal to the tube; stamens 3, well exerted; ovary inferior, with two of the three cells vestigial.

Accepted Name:
Valeriana dioica L.

Synonyms & Misapplications:
(none provided)
Infraspecies:
var. sylvatica – woodland valerian
Additional Resources:

PNW Herbaria: Specimen records of Valeriana dioica in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Valeriana dioica checklist entry.

E-Flora BC: Valeriana dioica atlas page.

CalPhotos: Valeriana dioica photos.

USDA Plants: Valeriana dioica information.

9 photographs:
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